The idea of modulating the transport properties of a material had origin from a requirement of computer science: this led to the development of a device that works as a logic switch. This is the origin of the metal-oxide-semiconductor field-effect transistor (MOSFET), a device that is able to tune its transport properties by means of the application of an electric field to a suitable semiconducting material. Nowadays this effect is exploited mainly for technological applications but in recent years a greater interest has been devoted to the possibility of using this effect in fundamental research. This Ph.D. thesis is focused on field-effect experiments realized with an innovative technique that exploits the formation of an electric double layer (EDL) at the interface between a polymeric electrolyte solution (PES) and the sample under study. The use of the PES gating allows the access to the largest quantity of injected charge that can be reached in a field-effect charge-modulation experiment. Of course this is not yet necessary for the development of devices for industrial and technological purposes but it’s very interesting for the investigation of the electronic properties of materials. In the specific case of this thesis, experiments on metals and standard superconductors have been performed.

Surface charge doping by polymer electrolyte gating in metals and superconductors / Sola, Alessandro. - (2014).

Surface charge doping by polymer electrolyte gating in metals and superconductors

SOLA, ALESSANDRO
2014

Abstract

The idea of modulating the transport properties of a material had origin from a requirement of computer science: this led to the development of a device that works as a logic switch. This is the origin of the metal-oxide-semiconductor field-effect transistor (MOSFET), a device that is able to tune its transport properties by means of the application of an electric field to a suitable semiconducting material. Nowadays this effect is exploited mainly for technological applications but in recent years a greater interest has been devoted to the possibility of using this effect in fundamental research. This Ph.D. thesis is focused on field-effect experiments realized with an innovative technique that exploits the formation of an electric double layer (EDL) at the interface between a polymeric electrolyte solution (PES) and the sample under study. The use of the PES gating allows the access to the largest quantity of injected charge that can be reached in a field-effect charge-modulation experiment. Of course this is not yet necessary for the development of devices for industrial and technological purposes but it’s very interesting for the investigation of the electronic properties of materials. In the specific case of this thesis, experiments on metals and standard superconductors have been performed.
2014
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2533888
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